.... I do admit that I am not much of a soccer fan - precisely because of the widespread and cowardly habit of flopping and the refusal of the sport to use modern technology to solve obvious refereeing problems.
I'm not a huge fan of flopping, but it's usually folks who don't understand the game well who object to it the most. There's a lot of flopping in the NBA as well but the big difference is that you can't decide a game with a single play as easily, making it less important to draw attention to the fouls.
Most of what Americans call flopping is exaggerating an actual foul to ensure that it's called more than the kind where no foul actually occurred. For example, the flop you pointed out was not that bad of a foul (and I'd prefer it not be called) but it wasn't that bad of a flop either, there was
contact that was not perfectly legal.
There are real cases of outright flopping in football, but this started to be addressed years ago with the instruction to officiating crews to card flopping (as defined as falling to no foul, not just exaggerating the foul to make sure it's seen).
But I agree with you about technology, it's not a football issue though (lots of purists reject technology in lots of sports), so I think you just aren't much of a football guy. Fbaezer has it right, it's lack of understanding the tactics more than anything else, there's fouling and cheating and bad officiating in every sport.
The real problem with football is not the technology, but the limiting card system and substitution system. It makes it almost necessary for the officiating crew to ignore some fouls (because a red card can be like choosing a winner so they err on the side of caution) and it provides inordinate incentive to draw fouls (to get them to make the calls that the rules say they should).
Football is not supposed to have much contact, yes they are falling more often than their agility would lead you to believe they would but they aren't supposed to be pushed, tugged, kicked or pulled at all and they do that to draw attention to the illegal defense more often than they fake a foul intentionally.